i just tried on macOS 15.1 and Xcode 16.1 and no bug so the problem seems to be with macOS 15.4

oh, I a miss to post this but I am running macOS Sequoia 15.4 (24E248) I just create a virtual machine, install 15.4 and Xcode (from developer website, not AppStore, and nothing else , same problem , so it could be related to 15.4 I see ssmith_c you are running 15.3.2. thank you all for your help, I will keep you posted on new find

ok, so third person saying it work form them. Clearly the problem is with my setup. I just tried on my Mac mini M2, even if I had tried it before, create the project, copy and paste the code, same problem. My Mac mini system is Canadian English , but My MacBook was in French Canadian for the first time, because apple Intelligence need the system to be the same language than Siri. but I return to English because I dont recognize so many thing in French. I dont know what to try next, other than do a full erase and a clean install.

I forgot to mention that after my post on the other website, I suspected my setup , so I delete Xcode using this, before reinstalling everything.

here are the first and second try First time Second time

Thanks you. I did not knew that, I checked and I did found another instance of my unique identifier, which will be gone in the new app. No problem there. I did found a reference to a file, with a path that does not exist anymore I dont know why it is still there but it will also be removed because I will do a complete rewrite anyway. I think my problem is resolve. Time for a new one :-)

this is what I can see opening the downloaded GitHub project on a computer that does not have my apple account . the green are where the bundle identifier has my name in it, I will correct that. The and red is where my name use to be , but now show only a number which I am ok with. :-)

Thank you for you patience. Those are the 3 places I could see my name.

I am just worry about people downloading the project to find my name in the file. After reading your post, I did some test. I saw my name in the file project.pbxproj but I now realize that my bundle identifier is base on my website which contains my name. :-) I will change that, For the AppleID, I try to open the zip file downloaded from Github in another account on my Mac, and in the same file the Team now show unknown name with a number . So the AppleID is kind of hidden. I guess that would be impossible to find my appleId based on that number. I should be ok. What do you think ? Thank you

@franc could you send me a screenshot of what it look like for DisclosureGroup , to see if it could help me then I could buy it. my goal is to learn to read API documentation, so I could follow as everything evolve. thank you

@OOPer thank you old is not the problem :-) learning a language was kind of easy because I have learn so many variant of basically the same thing :-) and even with a good brain, I think. my problem is with api documentation like we discuss earlier going from oop to declarative, is also a bit difficult. I managed to create an infinite loop when SwiftUI was announce :-) I remember fortran on Punch card where we had to put a certain character in column 6 or 7 (6 it seems after a web search) now in SwiftUI there are some times where I feel the same ways, I am not sure where to put stuff in Body. but I loved it so I will get it... one day.